Saw-swaging device



(No Model.)

M. COVEL.

SAW SWAGING DEVICE. No. 842,188.y PatentedvMy-ls, 1888.

IIIIIII 3o jects a little beyond the die-block, as shown,

yinner end of the Oiuide a and force the same UNITED STATES l vPATENTOFFICE.

MILO COVEL, OF CHICAGO, ILLINOIS.

SAWBSWAGING DEVICE.

SFECIFICATON forming part of Letters Patent No. 342,188, dated May 18,1886.

Application filed September 29, 1885.

To all whom it may concern.-

Beit known that I, MILO COVEL, of Ghicago, in the county of Cook andState ofIllinois, have invented certain new and useful Improvements inSaw-Swages, of which the following is a full, clear, and exactdescription, that will enable others to make and use the same, referencebeing had to the aecompanying drawings`,forming a part ofthisspecification.

rIhis invention relates to improvements in saw-swages; and it consistsof certain novel features in the construction, arrangement, andcombination of the several parts, as will be hereinafter set forth.

Figure l is a side elevation of a device embodying my improved features;Fig. 2, aplan view showing the interior works in the base, the upperparts being removed; Fig. 3, a front elevation, and Figs. 4. and 5 aredetached details.

Referring to the drawings, A represents a baseblock, the upper side ofwhich is chambered or cut out to receive the several parts entering intothe organization.

A represents a movable die-block, recessed for the insertion of theadjustable die a, as shown in Fig. 2. The inner end of the die a, havingcontact with the teeth of the saw,pro

and is longitudinally adjustable by means of the screw a. The inner endof the die-block A is adapted to have a slight movement on the pivot a2,which movement carries the dieblock and movable die away from the sawand the stationary die B, the position of the saw being indicated bythedotted lines in Fig. 2. The spring a3 serves to return the movable dieto a normal position, so as to permit of the saw being fed forwardanother tooth. The inner end of this spring is eut out, as shown in Fig.5, in order to pass on each side of the back from contact with thesaw-tooth at the same time with the movable die. j rIhe inner end ofthis guide is bent upward, as shown in Fig. 2, and is provided with thespring a, to automatically retain the same in Contact with thestationary die B. The outer projecting end oi this guide is threaded,and provided with the thumb-nut a, whereby said guide maybe adjustedwith reference to the rounded l Serial No. 178,515. (No model.)

surface of the stationary die, so as to impart more or less hook orpitch to the teeth, as may be required.

al is a detachable slide secured to the base, the inner end of which isprovided with the serrated or roughened surface as, as shown in Fig.v2.The tooth being swaged rests upon this roughened surface, and is therebyprevented from slipping.

b is an adjustable stop,liaving the inner end turned up a little to forma rest for the point of the tooth, and may be moved in or out, asdifferent saws may require.

rIlhe bracket B is bolted to the base-bloek, the right si'de heilig leftopen, as shown in Fig. 3, for the insertion of the saw. The up per endof this bracketis bifureated to receive the lower end of the angularsocket-piece B2, which has a pivotal movement therein. 'Ihe lower orinner end of thesocket-piece B2 is bifureatedto receive one end ofthelink B3, pivoted therein, as shown in Fig. 3. llhe opposite end ofthe link B" is pivoted in the upper end of the post B. Thelower end ofthis post is secured in the base-block by the pivot-bolt b. Theadjustable clamping -bolt C passes down through the lever-arm C' and theflange on the bracket B,the lower end being adapted to be brought intoContact with and clamp the saw-plate at each stroke of the swagingmeehanism. One end of the lever-arm O is pivoted to the bracket B',while the opposite beveled end has a frictional contact with the rollerC2, attached to the post B, as shown in Fig. 2.

rlhe wedge-block I) (shown in Figs. l, 2, and 4) is rounded at bothends, and is loosely inserted between the lower part of the post B andthe inner end. of the die-block A', both of which are provided withsemieireular grooves corresponding to the rounded ends of thewedge-block D.

Fig. l shows the device in a normal position, the operating-handle D',inserted in the socket-piece, heilig horizontal. Now, as the handle ismoved to a vertical position the upper end of the post Bl is drawntoward the bracket B by reason of the connecting-link B3. At the sametime this movement forces the loose end of the lever-arm C' to passunder the Toller C2 and force the bolt C down to rigmovable die isbrought in contact with the lOO tooth by the same movement through themedium of the wedge-block D, interposed between the post B"t and themovable die-block. The spring d serves to return the clamping-bolt C toits normal position after each stroke.

Havingthus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a saW-swage, the combination, with a movable die-block, of anadjustable die inserted therein, a stationary die or' anvil, and themeans described for bringing said movable die into position to swage thetooth, substantaily as and for the purpose set forth.

2. In a saw-swage, the combination, with the movable dieblock A and theguide a4, of the spring a?, substantially as and for the purpose setforth.

3. Ina saw-swage, the combination, with the stationary die or anvil B,having a rounded swagingsurface, of the adjustable guide a, having theinner end bent upward to conform to the contour of said die, the springa5, and the thun1b-nut a, substantially as and for the purpose setforth.

MIL() COVEL.

Witnesses:

L. M. FREEMAN, U. STANwooD.

